Note: Please allow 0.3?0.7in error for manual measurement. specification: Item Type: Massage Ball_x000D_Material: Silicone_x000D_Product Size: Approx. 6 x 6 x 6 cm / 2.4 x 2.4 x 2.4 in_x000D_Soft: Moderate_x000D_Elasticity: Good Elasticity Features: 1It has a novel design, comfortable hand feel, small size, easy to carry and easy to store. 2It can relieve muscle soreness, promote blood circulation, and achieve the effect of relaxing muscles. 3Multiple uses, it can be used not only for relaxing massage, but also for training of reaction ability. 4Silicone material, dirt resistant, oil resistant and wear resistant, completely food grade material, healthy and safe. 5Suitable for all parts of the body, neck, back, hands, feet and so on, regular hand exercises can improve flexibility. PackageList: 1 xSix Angle Ball